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Amiraneli [1.4K]
3 years ago
7

Multiply the following polynomials.

Mathematics
2 answers:
larisa [96]3 years ago
8 0

Answer:

D. 21x³- 32x²+ 9x + 2

Step-by-step explanation:

( 3 x²- 5 x + 2 ) ( 7 x + 1 )

Using distributive property

7 x ( 3 x²- 5 x + 2 ) + 1 ( 3 x²- 5 x + 2 )

multiply,

21 x ³ - 35 x² + 14 x + 3 x² - 5 x + 2

arranging like terms together

21 x³ - 35 x² + 3 x² + 14 x - 5 x + 2

21 x ³ - 32 x² + 9 x + 2

Alona [7]3 years ago
3 0

Answer:

21x^3-32x^2+9x+2

Step-by-step explanation:

(3x²- 5x + 2)(7x + 1)

Distribute

7x* (3x²- 5x + 2) + 1 *(3x²- 5x + 2)

21 x^3 -35x^2 +14x + (3x²- 5x + 2)

Combine like terms

21x^3-32x^2+9x+2

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I need help can anyone help me
goldenfox [79]

Answer:

D. H (-5,-2) J(-3,-5)K(2,-1)

Step-by-step explanation:

move k down 4 (2,-1)

Like or leave a comment :) have a good one

5 0
3 years ago
Read 2 more answers
Ketch the bounded region enclosed by y=e2x,y=e4xy=e2x,y=e4x and x=1x=1. decide whether to integrate with respect to xx or yy, an
slamgirl [31]
A) See the attached graph. The purple area appears to be what you want to find.

b) Integrating with respect to x seems much easier. If one were to integrate over y, there would need to be two regions of integration: [1, e^2] and [e^2, e^4].

c) \int\limits^1_0 {(e^{4x}-e^{2x})} \, dx =\frac{1}{4}(e^{4}-1) -\frac{1}{2}(e^{2}-1) \approx 10.2050094588

3 0
3 years ago
What is the base of a triangle with an area of 207 square inches and a height of 18 inches ?
xenn [34]

Answer:

A=1/2 B x H

207=1/2 B x 18

B=207/18 x 2

B= 23 inches

8 0
2 years ago
The function F is defined by F(x)=x^2+3X-10
vesna_86 [32]

Answer:

k = 13

smallest zero = -6

Step-by-step explanation:

f(x) is basically the function of x.

x could be any integer. f(x) is the solution of the function of x.

f(x) is defined as x² + 3x - 10

f(x) = x² + 3x - 10

Now, f(x+5) = x² + kx + 30

This statement here says that if the value of x is x+5, then the answer would be x² + kx + 30.

f(x) = x² + 3x - 10

f(x+5) = (x+5)² + 3(x+5) - 10

f(x+5) = x² + 10x + 25 + 3x + 15 - 10

f(x+5) = x² + 13x + 40 - 10

f(x+5) = x² + 13x + 30

x² + 13x + 30 = x² + kx + 30

hence, k = 13

Smallest zero = The smallest x value.

f(x+5) = x² + 13x + 30

Let's take f(x+5) = 0

x² + 13x + 30 = 0

which two numbers products give us 30 and add up to 13?

== 6 and 5

(x+6)(x+5) = 0

x+6 = 0

x = -6

x+5 = 0

x = -5

The two solutions are -6 and -5

The smallest out of these two is -6.  

7 0
4 years ago
Kinda in a hurry, someone help?
erma4kov [3.2K]
It would be B. 4 and 3/4
7 0
3 years ago
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